The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 2001
Filed:
Oct. 29, 1998
Applicant:
Inventor:
Mario Beretta, Sirtori, IT;
Assignee:
Tenax S.p.A., Vigano′, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 5/500 ; B29C 5/502 ; B29C 5/516 ; B29C 7/058 ;
U.S. Cl.
CPC ...
B29C 5/500 ; B29C 5/502 ; B29C 5/516 ; B29C 7/058 ;
Abstract
A method for stretching plastic nets and grids having the peculiarity that it consists in subjecting the product to be stretched to irradiation with electromagnetic waves with a wavelength above the infrared range, so as to heat the product by dielectric loss, and in subjecting the product to traction in order to produce stretching in at least one direction. The method allows to substantially improve the ability of the polymer to absorb the energy in order to profitably perform the stretching process.